Comment 0 for bug 1592361

ohai reports interface name "br-bm.755@br-bm" for vlan subinterface on the bridge.
nailgun agent failed with the following error:

E, [2016-06-14T08:59:46.180094 #15079] ERROR -- : Error 'No such file or directory - /sys/class/net/br-bm.755@br-bm' in gathering interfaces metadata: ["/usr/bin/nailgun-agent:|
409:in `realpath'", "/usr/bin/nailgun-agent:409:in `realpath'", "/usr/bin/nailgun-agent:409:in `block in _detailed'", "/usr/bin/nailgun-agent:402:in `each'", "/usr/bin/nailgun-|
agent:402:in `_detailed'", "/usr/bin/nailgun-agent:985:in `_data'", "/usr/bin/nailgun-agent:216:in `put'", "/usr/bin/nailgun-agent:1191:in `<main>'"]